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(No Model.) 2 Sheets-Sheet v H. 0.3001933.

. DIRT SGRAPER. No. 307,856. Patented Nov. 11, 1884.

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(No Model.) 2 Sheets-Sheet 2.

H. 0. HOOPER.

DIRT SGEAPER.

No. 307,856. Patented Nov. 11, 1884.

N. PETERS. Photoumognphan wahington. n. c.

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HENRY O. HOOPER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO B. E. HOOPER, OF SAME PLACE.

DlRT-SCRAPER.

UPECIFICATIQN forming part of Letters Patent No. 307,856, dated November 11, 1884.

Application filed June 2,1801. (370 model.)

7' all whom it may concern:

Be it known that I, HENRY O. HooPER, of the city and county of San Francisco and State of California, have invented an Improvement in Dirt-Scrapers; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to a new and useful dirt-scraper; and it consists in the devices which I shall hereinafter fully describe.

The object ofmy invention is to provide a simple and effective dirt-scraper, capable of being easily and conveniently operated.

Referring to the accompanyingdrawings,

I 5 Figure 1 is a perspective view of my scraper, showing it in position to carry a load. Fig. .2 is an end View showing the bowl inverted and bearing on its segmental ends, whereby it makes a complete revolution.

A is the bowl, having a bit, a, a curved back, and segmental ends B, formed on the arc of a circle, or approximately so.

C is the axle, the ends of which project and have mounted thereon the wheels D.

E is an angular three-sided frame, consisting of a bar with ends bent at right angles and loosely journaled on the axle.

F is the tongue secured to said frame.

G is a lever consisting of a bar with sides 3C bent at right angles, and then at acute angles,

curving upwardly and forwardly in the end portions, 9, which terminate above and rest on the frame E through the intervention of screws I, the adjustment of which has the ef- 5 feet of increasing or diminishing the bite of the bowl, as I shall show. The sides 9 of the lever extend from the rear forwardly over the axle, and are pivoted to the ends of the frame just forward of the axle by the bolts J. At their lowermost portions they are provided with beveled bearing catches or sockets k,

v with which engage correspondingly-beveled' lugs K on the ends of the bowl.

L is a handle by which lever G is operated. M is a spring-bar, through the lower portion of which the axle loosely passes. It is pivoted to frame E by the bolt J, which pivots the lever G to said frame. The upper end of the spring-bar is provided with a slotted or spaced bearing or clutch, m, which engages with the upper portion of the end or side 9 of lever G.

N is a brace to stiffen the bowl.

The operation of my scraper is as follows: When the bowl is in position ready to take a load, the bit is down to the ground, and is there held to its work by reason of the engagement of its ends with the lever G through the lugs K and bearing-catches is, said lever being itself held by the engagement of its ends g with the frame E, which prevents the le ver from moving, and consequently holds the bowl. hen the load is taken, and it becomes necessary to transport it any distance, the bit of the bowl must be raised from the ground and the bowl itself turned to a more horizontal position to carry its load. To do this the lever G is depressed by means of the handle L. This elevates its forward ends, which lift the front of the bowl until it can carry the load. The rear end of the lever is depressed sufficiently to engage with the springclutch M, and is held by it. When the spot is reached for the dumping, the spring-clutch is thrown out of engagement and the lever G is further depressed. The pivotcenter of the sides of the lever G being forward of that of the bowl, the bearing sockets or catches k on the lever, as they move upward through their arcs, move away from and al low the lugs K to slip from their engagement. The bowl, being now entirely free, falls forward, its bit striking and biting the earth and causing the bowl to invert itself, thus dumping its load. The machine, advancing, causes the bowl to turn still farther, bearing on its circular or segmental ends, Fig. 2, upon which it performs a complete revolution until its lugs fall into engagement with the bearings on the lever G again. As before stated, the forward 0 ends, 9, of this lever are not secured to the frame E, but merely rest thereon. Now, if I turn down the screws I in said ends so that they project through them a certain distance,

it is evident that they, bearing against the practically-fixed frame E, elevate the ends 9, which causes the elevation of the bit of the bowl through the engagement of the ends of the bowl with the lever G. The reverse of this is also true-namely, byturning up the screws I the bit is lowered. This adjustment enables me to regulate the bite of the bowl as desired.

@ quired considerable strength to return the bowl to position.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a dirt-scraper, the bowl A, having the circular or segmental ends B, the axle C, and wheels D, in combination with the pivoted frame E, the pivoted lever G, having sides g and curved ends 9 bearing on frame E, and a means whereby said levers engage the bowl to hold it,.and release it to permit its rotation on its ends B, substantially as herein described.

2. In a dirt-scraper, the bowlA, having the circular or segmental ends B, the axle O, and Wheels D, in combination with the frame E, pivoted on the axle, the lever G, having sides g pivoted to the frame E forward of the pivotcenter of the bowl, and curved ends bearing on said frame, and the beveled hearings or catches k on the lever G, and the b eveled lugs K on the bowl,wherebyatemporary engagement is effected between said lever and bowl,.sub-

istantially as and for the purpose herein described.

3. Ina dirt-scraper, the bowl A, having circular or segmental ends B, the axle O, and wheels D, in combination with the frame E,

pivoted on the axle, the lever G, having sides- 9 pivoted to the frame E, and curved ends bearing on said frame, a temporary connection or engagement between said lever and bowl, and the spring-bar M, pivoted on the axle and having the lugs m, for engaging and holding the lever G, substantially as and for the purpose herein described.

4. In a dirt-scraper,the pivoted bowl A,having bit a, and the pivoted frame E, in combination with the pivoted lever G, having sides 9 engaging the bowl, and curved ends 9 resting on the frame E, and the adjustable screws or stops I through said ends, and bearing on the frame, whereby the bit of the bowl is adjusted to increase or deereaseits bite, substantially as herein described.

5. A dirt-scraper consisting in the bowl A, having the circular or segmental ends B, axle C, and wheels D, the frame E, pivoted on the axle, tongue F, the lever G, having sides g pivoted to the frame and engaging the bow], and curved ends g bearing upon the frame,

the handle L on the lever, and the spring clutch-bar M, pivoted on the axle and engaging the lever G, all arranged and operating substantially as herein described.

In witness whereof I have hereunto set my hand.

HENRY O. HOOPER.

\Vitnesses:

O. D. Conn, LEE D. CRAIG. 

